General Motors (GM) continues to recall vehicles for a variety of reasons, with nearly three-quarters of a million cars being the latest, including hundreds of thousands of Camaros, Buicks and Cadillacs that may have defective seat adjustment bolts that could have caused a number of injuries.

About 30 million vehicles have been recalled by GM this year, and the trend continues this week with six new GM recalls announced on July 23, impacting another 717,949 vehicles in all.

The largest new recall involves 414,333 Chevrolet Camaro vehicles from the 2011-2012 model years; Chevrolet Equinox and GMC Terrain vehicles from the 2010-2012 model years; Buick Regal and LaCrosse vehicles from the 2011-2012 model years; and Cadillac SRX models from the 2010-2012 years, which were sold in the U.S. equipped with power height adjustable driver or front passenger seat structures.

According to GM, a bolt that secures the height adjuster actuator can fall out, causing the seat to move up and down freely. The automaker has acknowledged that the problems may be responsible for at least three injuries and one accident.

The problem was linked to a laser welding device that lost power during production and the company estimates that less than 1% of the vehicles recalled actually has the problem. The company says it knows of no accidents or injuries associated with the incomplete welds.

The company has also issued a recall for 120,426 model year 2011-213 Buick Regal and 2013 Chevrolet Malibu vehicles. The affected cars have front turn signals with two bulbs in each, but if one bulb in each side burns out the driver would have no turn signal and may be unaware, as the dashboard would not issue a warning, as it would when both bulbs on one side are burned out. No crashes or injuries have been reported in connection to this problem.

The company is also recalling 57,242 Chevrolet Impalas from the 2014 model year, with power steering problems that have caused at least one auto accident; 1,919 Chevrolet Sparks from the 2014-2015 model years, with a defectively bolded lower control arm that could cause loss of steering control; and 22 Chevrolet Tahoe, Suburban, and GMC Yukon and Yukon Denali vehicles from the 2015 model year, with roof carriers attached with the wrong nuts that could tear holes in the roof air bags.

Affected owners will be contacted by mail with details on how to have dealers conduct free repairs to resolve the problems.